Gearing.



A. N. ADAMS GEARING.-

.10, 1909. v 958,061 Patented May 17,1910.

ITED STATES PATENTOFFICE.

Anrnnn n. ADAMS, or s'rocKToN, CALIFORNIA.

. GEARING.

To all whom it may concern:

Be it known that I, ALFRED N. ADAMS, a citizen of the United States, .residing at Stockton, in the county of San Joaquin, State of California, have invented certain new and useful Improvements in Gearings; and I do declare the following to be. a full, clear, and exactdescription of the same, such as will enable ot hers skilled in the art' to which it vap'pertains to make and use the same, reference being had'to the accompanying drawings, and to the characters of ref= erence marked thereon,-which form a partof this application.

This invention relates to gearings for any kind or character of power driven mechan: ism and particularl'y'to the change speed gearings thereon, the object of the present invention being to produce a change speed gearing which will comprise a cone formed of gearswith a shifting 'gearmoving over them, the connection of the cone gearswith their shaft being such .as will permit the shifting gear to intermesh with twoof said cone'gearswithout pinching or otherwise damaging them by reason. of the difierent speeds which they would naturally'be run- 'ning. It might be especially noted at-this' time that the novelty especially claimed is the element of the cones and shift gear being geared instead. of friction surfaces, as

are'most cone shaped changespeed gears.

A further object of the invention'is to produce a simple and inexpensive structure and yet one which is exceedingly effective for the purpose for which it is designed These objects I accomplish by means of such structure and relative arrangement of parts as will fullyappear by a perusal of the following specification and claims.

In the drawings, similar characters of reference indicate corresponding parts in the several views.

Figure 1 is an interior view of a transmission case. showing my improved struc ture therein. Fig. 2 is an enlarged sectional view taken on a line a2w of Fig. .1. I Referring now more particularly to the characters of reference on the drawing, 1

designatesthe engine casing, and 2 the' transmission casing, and-8 the fly wheel of the engine driven by its shaft 4, which isclutched or otherwise connected as shown' at 5 to the main driving shaftb on which is formeda change speed cone consisting of a plurality of cone shaped, gears 7 held in fixed as one being Specification of Letters Patent. 7 I Patented May 17 1910 i 7 Application filed November 10, 1909. Serial N 0. 527,167.

by set screws 9.

On the shaft 6 with each gear 7 are a plurality of grooves 9 forming lugs 10 and in an interior solid portion ll of the gears 7 .are aplurality of recesses 12 in which are 14 connected between said dogs 13 and the bottom of recesses 15 in the portion 11.

- On the shaft 6 below the gears 7 is a rigid gear 16 driving an idle gear 17 alined with the edge of the cone gears 7, whereby a shift gear 20 on a driven shaft 19 can readily engage said gear 17 to perform a reverse motion of the mechanism, the space between said gear 17 and said gear 7 being the neutral pointin the mechanismwhere no motion is transmitted to the machinery. The shift gear 20 is operated by a gear rack-21 having a shifting yoke 21 moving in a slot 21*" in the casing 2, said rack '21 being operated by. a gear quadrant 22 having an operating lever 23. From the neutral point the shift gear 20 moves onto the lowest or smallest of the gears 7 which is low speed, and the speed is gradually increased by moving the gear 2011p the cone gears 7 until the highest and largest oneis reached which is high speed on the cone. As the gear 20 shifts from one of the gears 7 to; the other, it is naturally intermeshed with two gears at one time, and larger than the other is naturally covering a 'reater area with each revolution, the result ,would be disastrous were it not for'my lug and dog mechanism which. permits the gear 20 to transmit the increased motion to the lesser gear independently of the motion of the shaft 6, the motion .of which is transmitted only through its engagement of the lugs'lO with the dogs 13, which permits the said gear 7 to move faster independently of its shaft 6. As the gear 20 leaves thelast of the gears 7 which gives the high speed of the gears 7, its yoke 21 strikes a collar 24 on the shaft 19, and moves said shaft 19 through its bearings in the casing 2 and moves its transmission gear 26 out of "engagement with its correspondinggear 27 on asleeve 28 on the drive shaft 29 and incidentally shifts a bar 30 on the sleeve 28 to carry 'a clutch 31 on said sleeve into an engagement with aclutch 32 on the shaft 6,

thu s giving the direct drive and speed ofthe engine to the shaft 29. This same'result is position by collars 8 fixed to the shaft 6 the object of the. invention as set forth herein.

While this specification sets ar in detailthe present and preferred construction of the. device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the in vention. v

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is:

. 1. A gearing comprising a driving shaft, a cone on said shaft comprising a plurality of independent gears, a shift ear moving over said cone gears, means or isolating said shift gear from said cone gears, a driven shaft and means for engaging said driven shaft with said driving shaft when said gears are isolated.

.2. The combination of a driving shaft and a driven shaft, a plurality of beveled gears gears on said driven and third shaft on said driving shaft arrangedend to end and having a direct connection with said drivingshaft, a driven gear, means within said beveled gears to enable one of lesser 1 diameter to rotate faster than said driving shaft and adjacent beveled gear of greater diameter, while said lesser andgreater beveled gears are simultaneously in engagement with the said-driven gear, a third shaft,

nor-

for

mally engaging each other and means disengaging said last two gears. I

8. gearing comprising a driving shaft and a driven shaft,'a plurality of independ- 'ent beveled gears "on said drivin shaft, a shiftinggear on said driven sha movingover said beveled ears, meanswithin said' beveled gears to a low them to compensate with each other when two of them are in mesh with the driven gear at one time, a

third shaft, a driving means from said driven shaft to said third'shaft, means for isolating said driven gear fromQsaid beveled gears, and means for connecting said third shaft with said driving shaft when said gears are isolated. 1

In testimony whereof .I affix my signature in presence of two witnesses. g ALFRED N. ADAMS.

Witnesses:

PERCY S. WEBSTER, J OSHUA B. WEBSTER. 

